Class
ALSASeqUserClient
Description [src]
class ALSASeq.UserClient : GObject.Object {
parent_instance: GObject
}A GObject-derived object to express user client.
A ALSASeqUserClient is a GObject-derived object to express user client. Any port can be added
to the client as destination or source for any event.
When the call of alsaseq_user_client_open() the object maintain file descriptor till object
destruction. The call of alsaseq_user_client_create_source() returns the instance of
GSource. Once attached to the GSource,
GMainContext / GMainLoop is available as event dispatcher. The
ALSASeqUserClient::handle-event signal is emitted in the event dispatcher to notify the
event. The call of alsaseq_user_client_schedule_event() schedules event with given parameters.
Constructors
alsaseq_user_client_new
Allocate and return an instance of ALSASeqUserClient.
Instance methods
alsaseq_user_client_create_port
Create a port into the client.
alsaseq_user_client_create_port_at
Create a port into the client with the given numeric port ID.
alsaseq_user_client_create_queue
Create a new queue owned by the client. The content of information is updated if success.
alsaseq_user_client_create_source
Allocate GSource structure to handle events from ALSA seq character device. In each
iteration of GMainContext, the read(2) system call is exected to dispatch
sequencer event for ALSASeqUserClient::handle-event signal, according to the result of
poll(2) system call.
alsaseq_user_client_delete_port
Delete a port from the client.
alsaseq_user_client_delete_queue
Delete the queue owned by the client.
alsaseq_user_client_get_info
Set client information.
alsaseq_user_client_get_pool
Get information of memory pool in the client.
alsaseq_user_client_get_protocol_version
Get the version of sequencer protocol currently used. The version is expressed as the array with three elements; major, minor, and micro version in the order. The length of major version is 16 bit, the length of minor and micro version is 8 bit each.
alsaseq_user_client_get_queue_tempo
Get the data of tempo for the queue.
alsaseq_user_client_get_queue_timer
Get the data of timer for the queue.
alsaseq_user_client_get_queue_usage
Get usage of the queue by the client.
alsaseq_user_client_open
Open ALSA sequencer character device.
alsaseq_user_client_operate_subscription
Operate subscription between two ports pointed by the data.
alsaseq_user_client_remove_events
Remove queued events according to the filter.
alsaseq_user_client_schedule_event
Deliver the event immediately, or schedule it into memory pool of the client.
alsaseq_user_client_schedule_events
Deliver the events immediately, or schedule it into memory pool of the client.
alsaseq_user_client_set_info
Get client information.
alsaseq_user_client_set_pool
Configure memory pool in the client.
alsaseq_user_client_set_queue_tempo
Set the data of tempo to the queue.
alsaseq_user_client_set_queue_timer
Set the data of timer for the queue.
alsaseq_user_client_set_queue_usage
Start the queue to use or not.
alsaseq_user_client_update_port
Update port information.
alsaseq_user_client_update_queue
Update owned queue according to the information.
Properties
ALSASeq.UserClient:client-id
The numeric ID of the client.
Signals
ALSASeq.UserClient::handle-event
When event occurs, this signal is emit with the instance of object which includes batch of of events.
Signals inherited from GObject (1)
GObject.Object::notify
The notify signal is emitted on an object when one of its properties has its value set through g_object_set_property(), g_object_set(), et al.
Class structure
struct ALSASeqUserClientClass {
GObjectClass parent_class;
void (* handle_event) (
ALSASeqUserClient* self,
const ALSASeqEventCntr* ev_cntr
);
}Class members
parent_class |
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| No description available. | |
handle_event |
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| No description available. |
Virtual methods
ALSASeq.UserClientClass.handle_event
When event occurs, this signal is emit with the instance of object which includes batch of events.